Why Lithium Sucks...

... Less than your Framework

Inspired by @nateabele and @jperras talk: http://www.slideshare.net/nateabele/lithium-the-framework-for-people-who-hate-frameworks

Transcript

1. Why Lithium sucks
   MEHDI LAHMAM B.
   @mehlah
   

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2. Why Lithium sucks
   Less than your framework
   

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3. I’m Mehdi
   

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4. Object dependencies
   “The principle of separating configuration from use”
   

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5. function initialize(&$controller, $settings = []) {
   //...
   $prefixes = Router::prefixes();
   if (!empty($prefixes)) {
   foreach ($prefixes as $prefix) {
   // do something with the global state ...
   }
   }
   if (Configure::read() > 0) {
   App::import('Debugger');
   Debugger::checkSecurityKeys();
   }
   }
   Sucks
   Sucks hard !
   

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6. Configuration
   

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7. function spam($emails) {
   $this->Email->subject = 'Welcome to our really cool thing';
   $this->Email->replyTo = 'support@example.com';
   $this->Email->from = 'Cool Web App ';
   $this->Email->template = 'simple_message';
   $this->Email->sendAs = 'both';
   foreach ($emails as $email) {
   $this->Email->to = $email['address'];
   $this->Email->subject = "Special offer for {$email['name']}";
   $this->Email->send();
   }
   } Sucks
   

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8. Dependency Injection
   

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9. class User {
   function __construct($storage) {
   $this->storage = $storage;
   }
   // ...
   }
   $storage = new SessionStorage('SESSION_ID');
   $user = new User($storage);
   Show that object who’s boss !
   

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10. Of course, we want to abstract this
    

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11. Of course, we want to abstract this
    Frameworks, adore abstraction
    

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12. Of course, we want to abstract this
    Frameworks, adore abstraction
    Fabien

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13. A DI story, in 6 parts
    

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14. $transport = new Zend_Mail_Transport_Smtp('smtp.gmail.com', array(
    'auth' => 'login',
    'username' => 'foo',
    'password' => 'bar',
    'ssl' => 'ssl',
    'port' => 465,
    ));
    $mailer = new Zend_Mail();
    $mailer->setDefaultTransport($transport);
    

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15. DI Container to the rescue !
    

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16. class Container {
    public function getMailTransport() {
    return new Zend_Mail_Transport_Smtp('smtp.gmail.com', array(
    'auth' => 'login',
    'username' => 'foo',
    'password' => 'bar',
    'ssl' => 'ssl',
    'port' => 465,
    ));
    }
    public function getMailer() {
    $mailer = new Zend_Mail();
    $mailer->setDefaultTransport($this->getMailTransport());
    return $mailer;
    }
    }
    

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17. class Container {
    public function getMailTransport() {
    return new Zend_Mail_Transport_Smtp('smtp.gmail.com', array(
    'auth' => 'login',
    'username' => 'foo',
    'password' => 'bar',
    'ssl' => 'ssl',
    'port' => 465,
    ));
    }
    public function getMailer() {
    $mailer = new Zend_Mail();
    $mailer->setDefaultTransport($this->getMailTransport());
    return $mailer;
    }
    }
    $container = new Container();
    $mailer = $container->getMailer();
    

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18. class Container {
    protected $parameters = array();
    public function __construct(array $parameters = array()) {
    $this->parameters = $parameters;
    }
    public function getMailTransport() {
    return new Zend_Mail_Transport_Smtp('smtp.gmail.com', array(
    'auth' => 'login',
    'username' => $this->parameters['mailer.username'],
    'password' => $this->parameters['mailer.password'],
    'ssl' => 'ssl',
    'port' => 465,
    ));
    }
    public function getMailer() {
    $mailer = new Zend_Mail();
    $mailer->setDefaultTransport($this->getMailTransport());
    return $mailer;
    }
    }
    

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19. $container = new Container(array(
    'mailer.username' => 'foo',
    'mailer.password' => 'bar',
    ));
    $mailer = $container->getMailer();
    

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20. The Dependency Injection Container in Symfony is managed
    by a class named sfServiceContainer.
    Fabien

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21. class Container extends sfServiceContainer {
    static protected $shared = array();
    protected function getMailTransportService() {
    return new Zend_Mail_Transport_Smtp('smtp.gmail.com', array(
    'auth' => 'login',
    'username' => $this['mailer.username'],
    'password' => $this['mailer.password'],
    'ssl' => 'ssl',
    'port' => 465,
    ));
    }
    protected function getMailerService() {
    if (isset(self::$shared['mailer'])) {
    return self::$shared['mailer'];
    }
    $class = $this['mailer.class'];
    $mailer = new $class();
    $mailer->setDefaultTransport($this->getMailTransportService());
    return self::$shared['mailer'] = $mailer;
    }
    }
    

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22. Of course now you want to abstract the crap out of the
    Service Container.
    http://fabien.potencier.org/article/13/introduction-to-the-symfony-service-container
    

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23. So let’s use a Builder to configure Services.
    

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24. require_once 'PATH/TO/sf/lib/sfServiceContainerAutoloader.php';
    sfServiceContainerAutoloader::register();
    $sc = new sfServiceContainerBuilder();
    $sc->
    register('mail.transport', 'Zend_Mail_Transport_Smtp')->
    addArgument('smtp.gmail.com')->
    addArgument(array(
    'auth' => 'login',
    'username' => '%mailer.username%',
    'password' => '%mailer.password%',
    'ssl' => 'ssl',
    'port' => 465,
    ))->
    setShared(false)
    ;
    $sc->
    register('mailer', '%mailer.class%')->
    addMethodCall('setDefaultTransport', array(new
    sfServiceReference('mail.transport')))
    ;
    

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25. And for good mesure, have our configurations for Service
    Containers in XML files.
    

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26. So ...
    we have Dependency Injection
    

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27. So ...
    we have Dependency Injection
    Managed by a Service Container
    

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28. So ...
    we have Dependency Injection
    Managed by a Service Container
    Parametrized with XML data (or YAML for cool boys)
    

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29. So ...
    we have Dependency Injection
    Managed by a Service Container
    Parametrized with XML data (or YAML for cool boys)
    And the whole thing configured by a Builder
    

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30. So ...
    we have Dependency Injection
    Managed by a Service Container
    Parametrized with XML data (or YAML for cool boys)
    And the whole thing configured by a Builder
    ... to fix one problem.
    

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31. Doh !
    

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32. Lithium tries to suck less
    

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33. Consistency
    

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34. namespace app\foo;
    use lithium\util\String;
    use lithium\util\Collection;
    class Foo extends \lihtium\core\Object {
    protected $_classes = [
    'logger' => 'lithium\analysis\Logger',
    'cache' => 'lithium\storage\Cache'
    ];
    public function __construct(array $config = []) {
    //...
    }
    protected function _init() {
    }
    }
    

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35. $foo = new Foo(['classes' => [
    'cache' => 'app\extensions\storage\cache'
    ]]);
    

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37. Auth
    Cache
    Catalog
    Connections
    Logger
    Session
    Adaptable
    

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38. Auth::config(['user' => [
    'adapter' => 'Form',
    'model' => 'Users',
    ]);
    

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39. Connections::config([
    'legacy' => array(
    'type' => 'database',
    'adapter' => 'MySQL'
    ),
    'new' => array(
    'type' => 'database',
    'adapter' => 'MongoDb'
    ),
    'funcky' => array(
    'type' => 'Http',
    'adapter' => 'CouchDb'
    )
    ]);
    

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40. Cache::config(array(
    'local' => array(
    'adapter' => 'Apc',
    ),
    'distributed' => array(
    'adapter' => 'Memcached',
    'servers' => ['127.0.0.1']
    ),
    'default' => array(
    'adapter' => 'File',
    )
    ));
    

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41. Aspect Oriented Design
    

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42. Posts::all()
    Logging
    Caching
    

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43. Posts::all()
    Logging
    Caching
    

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44. use lithium\analysis\Logger;
    Posts::applyFilter('find', function($self, $params, $chain) {
    Logger::write('info', 'A log message');
    return $chain->next($self, $params, $chain)
    }};
    

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45. Lithium tries to suck less
    

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46. http://lithify.me
    Sucks. But check it out anyway
    

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